guideline
Word family
Synonym discussion
Sense: noun/1
A guideline is a suggested course of action from an authority — it tells you the best way, but not the only way. A rule is stronger: it must be followed, often with consequences for breaking it. A recommendation is softer and can come from anyone, not just an organisation. A standard is a fixed level of quality or achievement that people are expected to meet. A policy is a formal set of principles adopted by an organisation. For example, a hospital may issue guidelines on hand washing (suggested best practice), while it has a strict rule that all staff must wash hands before surgery.
Common collocations
Etymology
The word 'guideline' combines 'guide' (from Old French 'guider', meaning to show the way) and 'line' (from Latin 'linea', a string or mark). Its earliest use was literal — a rope used to guide climbers across difficult terrain. The modern meaning of 'a principle that directs a course of action' emerged in the late 18th century.